MCQ IN MEDICINE

Detailed explanation-1: -Cholera, bubonic plague, smallpox, and influenza are some of the most brutal killers in human history. And outbreaks of these diseases across international borders, are properly defined as pandemic, especially smallpox, which throughout history, has killed between 300-500 million people in its 12, 000 year existence.

Detailed explanation-2: -The 1918 influenza pandemic was the most severe pandemic in recent history. It was caused by an H1N1 virus with genes of avian origin.

Detailed explanation-3: -There are 4 types of influenza viruses, types A, B, C and D. Influenza A and B viruses circulate and cause seasonal epidemics of disease.

Detailed explanation-4: -Influenza (flu) can cause mild to severe illness, and at times can lead to death.